- GtkSourceStyle — Represents a style
- GtkSourceStyleScheme — Controls the appearance of GtkSourceView
- GtkSourceStyleSchemeManager — Provides access to GtkSourceStyleSchemes
- GtkSourceStyleSchemeChooser — Interface implemented by widgets for choosing style schemes
- GtkSourceStyleSchemeChooserButton — A button to launch a style scheme selection dialog
- GtkSourceStyleSchemeChooserWidget — A widget for choosing style schemes